Edwin medden



'(ModeL) I E. MEDDEN;

PACKING FOR JOURNALS.

No. 276,060. Patented Apr.17.18.83.

LII

3 NITED STATES ATENT OFFICE.

EDWIN MEDDEN, OF SENECA FALLS, NEW YORK,ASSIGNOR TO THE SILSBY MANUFACTURING COMPANY, OF SAME PLACE.

PACKING FOR JOURNALS.

SPECIFICATION forming part of Letters Patent No. 276,060, dated April 17, 1883.

Application filed March 7, 1883.

To all whom it may concern.-

Be it known that I, EDWIN MEDDEN, a citizen of the United States, residing at Seneca Falls, in the county of Seneca and State of New York, have invented a new and useful Improvementin EackingforJournals, of which the following is a specification.

My invention is particularly applicable as a shaft casing or packing for the journals of rotary engines and pumps, but may be used as a journal or packing for any like mechanism.

In all rotary machines where the shaft projects through the casing of the cylinder, and a stuffing-box is needed to prevent leakage, great difficulty has been experienced in obtaining a perfect packing, as the tendency of the shaft is to wear on one side, destroying the packing, and thus occasioning leakage.

My invention consists in a circular packingbox, situate upon the cylinder-casing and cast with the same, through which the main shaft passes. A slot made upon the inside edge of the packing-box admits of any suitable packing material being inserted about the periphery of a loose collar, which serves as a bushing about the main shaft, said collar having upon its end, near the casin g, slots, in which are secured springs, which extend beyond the slots, and, pressing against the outer side of the easing at one end, cause the collar or bushing to press at its other end against a tight collar secured to the main shaft. A gland-nut having an opening of sufficient size to allow the same to slip over the collar secured to the shaft is screwed upon the outer edge of the packingbox and bears upon the packing material.

In order that myinvention maybe fully understood, I will proceed to describe it with reference to the accompanying drawings, forming a part of this specification, in which-.-

Figure 1 is a side elevation, partly in section. Fig. 2 is a view of one end of the loose collar, showing the slots and springs.

A is the casing of the cylinder. B are shafts having secured to them the meshing pistons C. D is the packing-box, having up- (Modehl on the end and inside part thereof a slot, at, which is filled by suitable packing material (shown at b) placed about the periphery of a loose collar or bushing, E, which has upon the end next to the cylinder-casing slots 0, in which are secured springs 01, which extend be yond said slots and bear against the casing,

which causes the opposite end of the said collar or bushing to bear against a tight collar, '5 F, screwed or suitably fastened to the main shaft B and revolving with it. A gland-nut, Gr, having an. opening of sufficient size to slip over the tight collar F, compresses the packing material.

It will be seen that all soft packing material in contact with the rotating shaft is dispensed with, and that as the steam or water attempts to escape from the cylinder it presses against the loose collar E, which, with its springs, is thus made to bear against the collar F and tighten the joint. Any steam or water which may pass up between the periphery of the collar E and the side of the packing-box D is prevented from escaping by means of the packing material.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. The loose collar or bushing E, within which the shaft is adapted to rotate, said collar having upon its outer periphery suitable packing material, as set forth.

2. The combination of the main shaft B, the fixed collar F, secured to the said shaft and 8c rotating therewith, and the loose collar E, as and for the purpose set forth.

3. The combination of the packin g-box D,1oose collar or bushing E, having upon its periphery suitable packing material, and pressed against 8 5 the collar F by means of the springs d, and gland-nut G, for compressing the packing material, as set forth.

EDWIN MEDDEN. Witnesses:

SAMUEL M. MICHAEL, LEROY J. EMERY. 

